Hi,
as i know, in cadence there are only libraries --> cell views --> views. views (schematic, layout, spectre ...) are sub-directiories of the cell view-directiory and the cell views are sub-directiories of the library. in the library manager only those libs, cellviews and views are displayed that are listened in the cds.lib file. so i think you only have to write the path to the library in your cds.lib and then you can open the cell view in the lib-manager.
greetings,
hqqh